#include<stdio.h>
#include<stdlib.h>
#include<string.h>

int main()
{
    unsigned int a=6;
    int b=-20;
    int c=a+b;
    printf("%d\n",c);

    printf("%x\n",12345);

    printf("%d\n",1000*1/3);

    float f1=1000*(1/3);
    printf("%f\n",f1);

    float f2=1000.0*(1/3);
    printf("%f\n",f2);

    float f3=1/3.0;
    printf("%.17f\n",f3);

    float f4=123456789;
    printf("%f\n",f4);

    double d1=123456789;
    printf("%f\n",d1);

    int plus=5;
    //printf("%d\n",(++plus)--);
}
